bcachefs: Be slightly less tricky with union usage

This is to fix a valgrind complaint - the code was correct, but too
tricky for valgrind to know that.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2019-11-09 14:58:09 -05:00 • committed by Kent Overstreet
commit 0897705163